I thought this interesting because Alexander Denk explains the function of a kidney in easy language that resonates with many. We think we are drinking enough water but often the water is not of good quality, not so easy to drink, and does not hydrate the body as well asKangen Water.I know I go on about this but it is true. If you have a chance to sample the Kangen water (Not sold in shops you will need to know an Enagic distributor . Like me) do so and you will know what I am talking about. It is so much softer and palatable than any water you will ever drink. It has anti-oxidant qualities and 9.5 Ph level. The machines of course like the K8has also 7 types of water that it produces (I have two of these).